IVANOVA, D. A New Species of Polystichum (Dryopteridaceae) to the Bulgarian Flora. Proceedings of the Bulgarian Academy of Sciences, Sofia, Bulgaria, v. 76, n. 6, p. 904–910, 2023. DOI: 10.7546/CRABS.2023.06.10. Disponível em: https://www.proceedings.bas.bg/index.php/cr/article/view/333. Acesso em: 20 oct. 2026.